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Robust Chance-Constrained Secure Transmission for Cognitive Satellite-Terrestrial Networks

Li, Bin, Fei, Zesong, Chu, Zheng, Zhou, Fuhui, Wong, Kai-Kit and Xiao, Pei (2018) Robust Chance-Constrained Secure Transmission for Cognitive Satellite-Terrestrial Networks IEEE Transactions on Vehicular Technology.

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Abstract

Cognitive satellite-terrestrial networks (CSTNs) have been recognized as a promising network architecture for addressing spectrum scarcity problem in next-generation communication networks. In this paper, we investigate the secure transmission for CSTNs where the terrestrial base station (BS) serving as a green interference resource is introduced to enhance the security of the satellite link. Adopting a stochastic model for the channel state information (CSI) uncertainty, we propose a secure and robust beamforming framework to minimize the transmit power, while satisfying a range of outage (probabilistic) constraints concerning the signal-to-interference-plus-noise ratio (SINR) recorded at the satellite user and the terrestrial user, the leakage-SINR recorded at the eavesdropper, as well as the interference power recorded at the satellite user. The resulting robust optimization problem is highly intractable and the key observation is that the highly intractable probability constraints can be equivalently reformulated as the deterministic versions with Gaussian statistics. In this regard, we develop two robust reformulation methods, namely S-Procedure and Bernstein-type inequality restriction techniques, to obtain a safe approximate solution. In the meantime, the computational complexities of the proposed schemes are analyzed. Finally, the effectiveness of the proposed schemes are demonstrated by numerical results with different system parameters.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Li, BinUNSPECIFIEDUNSPECIFIED
Fei, ZesongUNSPECIFIEDUNSPECIFIED
Chu, Zhengzheng.chu@surrey.ac.ukUNSPECIFIED
Zhou, FuhuiUNSPECIFIEDUNSPECIFIED
Wong, Kai-KitUNSPECIFIEDUNSPECIFIED
Xiao, PeiP.Xiao@surrey.ac.ukUNSPECIFIED
Date : 2018
Copyright Disclaimer : © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords : Satellite-terrestrial networks; Physical-layer security; Robust beamforming; Outage probability; Power minimization
Depositing User : Clive Harris
Date Deposited : 09 Jan 2018 09:26
Last Modified : 09 Jan 2018 09:26
URI: http://epubs.surrey.ac.uk/id/eprint/845562

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